LLVM  6.0.0svn
Public Member Functions | Public Attributes | List of all members
llvm::TargetLowering::AsmOperandInfo Struct Reference

This contains information for each constraint that we are lowering. More...

#include "llvm/CodeGen/TargetLowering.h"

Inheritance diagram for llvm::TargetLowering::AsmOperandInfo:
Inheritance graph
[legend]
Collaboration diagram for llvm::TargetLowering::AsmOperandInfo:
Collaboration graph
[legend]

Public Member Functions

 AsmOperandInfo (InlineAsm::ConstraintInfo Info)
 Copy constructor for copying from a ConstraintInfo. More...
 
bool isMatchingInputConstraint () const
 Return true of this is an input operand that is a matching constraint like "4". More...
 
unsigned getMatchedOperand () const
 If this is an input matching constraint, this method returns the output operand it matches. More...
 
- Public Member Functions inherited from llvm::InlineAsm::ConstraintInfo
bool hasMatchingInput () const
 hasMatchingInput - Return true if this is an output constraint that has a matching input constraint. More...
 
 ConstraintInfo ()=default
 Default constructor. More...
 
bool Parse (StringRef Str, ConstraintInfoVector &ConstraintsSoFar)
 Parse - Analyze the specified string (e.g. More...
 
void selectAlternative (unsigned index)
 selectAlternative - Point this constraint to the alternative constraint indicated by the index. More...
 

Public Attributes

std::string ConstraintCode
 This contains the actual string for the code, like "m". More...
 
TargetLowering::ConstraintType ConstraintType = TargetLowering::C_Unknown
 Information about the constraint code, e.g. More...
 
ValueCallOperandVal = nullptr
 If this is the result output operand or a clobber, this is null, otherwise it is the incoming operand to the CallInst. More...
 
MVT ConstraintVT = MVT::Other
 The ValueType for the operand value. More...
 
- Public Attributes inherited from llvm::InlineAsm::ConstraintInfo
ConstraintPrefix Type = isInput
 Type - The basic type of the constraint: input/output/clobber. More...
 
bool isEarlyClobber = false
 isEarlyClobber - "&": output operand writes result before inputs are all read. More...
 
int MatchingInput = -1
 MatchingInput - If this is not -1, this is an output constraint where an input constraint is required to match it (e.g. More...
 
bool isCommutative = false
 isCommutative - This is set to true for a constraint that is commutative with the next operand. More...
 
bool isIndirect = false
 isIndirect - True if this operand is an indirect operand. More...
 
ConstraintCodeVector Codes
 Code - The constraint code, either the register name (in braces) or the constraint letter/number. More...
 
bool isMultipleAlternative = false
 isMultipleAlternative - '|': has multiple-alternative constraints. More...
 
SubConstraintInfoVector multipleAlternatives
 multipleAlternatives - If there are multiple alternative constraints, this array will contain them. More...
 
unsigned currentAlternativeIndex = 0
 The currently selected alternative constraint index. More...
 

Detailed Description

This contains information for each constraint that we are lowering.

Definition at line 3243 of file TargetLowering.h.

Constructor & Destructor Documentation

◆ AsmOperandInfo()

llvm::TargetLowering::AsmOperandInfo::AsmOperandInfo ( InlineAsm::ConstraintInfo  Info)
inline

Copy constructor for copying from a ConstraintInfo.

Definition at line 3262 of file TargetLowering.h.

Member Function Documentation

◆ getMatchedOperand()

unsigned TargetLowering::AsmOperandInfo::getMatchedOperand ( ) const

If this is an input matching constraint, this method returns the output operand it matches.

Definition at line 2544 of file TargetLowering.cpp.

References assert().

◆ isMatchingInputConstraint()

bool TargetLowering::AsmOperandInfo::isMatchingInputConstraint ( ) const

Return true of this is an input operand that is a matching constraint like "4".

Definition at line 2537 of file TargetLowering.cpp.

References assert().

Member Data Documentation

◆ CallOperandVal

Value* llvm::TargetLowering::AsmOperandInfo::CallOperandVal = nullptr

◆ ConstraintCode

std::string llvm::TargetLowering::AsmOperandInfo::ConstraintCode

This contains the actual string for the code, like "m".

TargetLowering picks the 'best' code from ConstraintInfo::Codes that most closely matches the operand.

Definition at line 3247 of file TargetLowering.h.

Referenced by ChooseConstraint(), llvm::TargetLowering::ComputeConstraintToUse(), and llvm::TargetLowering::ParseConstraints().

◆ ConstraintType

TargetLowering::ConstraintType llvm::TargetLowering::AsmOperandInfo::ConstraintType = TargetLowering::C_Unknown

Information about the constraint code, e.g.

Register, RegisterClass, Memory, Other, Unknown.

Definition at line 3251 of file TargetLowering.h.

Referenced by ChooseConstraint(), llvm::TargetLowering::ComputeConstraintToUse(), createVirtualRegs(), IsNonLocalValue(), and IsOperandAMemoryOperand().

◆ ConstraintVT

MVT llvm::TargetLowering::AsmOperandInfo::ConstraintVT = MVT::Other

The ValueType for the operand value.

Definition at line 3259 of file TargetLowering.h.

Referenced by llvm::TargetLowering::ComputeConstraintToUse(), and llvm::TargetLowering::ParseConstraints().


The documentation for this struct was generated from the following files: